"Graph" and "Charts" are too close in name and therefore confusing
Every time I am looking for the colorful "Charts" for detailed project stats, my brain wants to trick me to click into "Graph" since that makes me think of what I actually get in the "Charts" menu.
I do also feel like the "Repository" menu is too long and crowded by now, and I feel like "Charts" is a bit misplaced there in general. I cannot really specify why exactly, it's just a bit of a gut feeling - it might be related to it being the only entry that isn't really giving super specific information about project organization, but rather much more vague overall charts and stats that feel like they are on a much more indirect subjective level than the other entries.
I therefore propose that "Charts" is reconsidered both in name and place in the menu. Maybe a completely separate "Insights" (which also sets itself much better apart from "Graphs" as a word) menu like GitHub has it would be an idea?
GitHub also has much more graphs than GitLab: some of them are actually really useful and IMHO sorely lacking from gitlab, e.g. the contribution graph here: https://github.com/tethercode/stdlib/graphs/contributors which gives you a much better idea of how active the project is right now than the pure commits-per-weekday stats stuff gitlab has. Therefore, this maybe also would be a possibility to expand the available Charts into multiple pages with more interesting stuff and catch up on this front a bit.